Superabsorbent Polymer-Iron Composition for Anaerobic Digestion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Lignocellulosic agricultural residues are slow to degrade during anaerobic digestion, leading to reduced methane production and increased residence times in anaerobic digesters, which is inefficient and costly.
Innovation Solution
A composition of a superabsorbent polymer and iron, added at a low dose, is introduced into anaerobic digesters to accelerate the degradation of lignocellulosic residues, enhancing methane production through a synergistic effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If lignocellulosic agricultural residues are used as substrate for anaerobic digestion, then abundant and available biomass is valorized without competing with food, but degradation is slow leading to increased residence time and reduced methane production efficiency
Solution Approach 1:
The patent introduces a composition containing superabsorbent polymer and iron as an intermediary substance that mediates between the lignocellulosic residues and the anaerobic digestion process. This composition acts as a catalyst and modifier that accelerates the degradation of lignin and cellulose, enabling faster methane production from abundant agricultural residues without competing with food crops.
Solution Approach 2:
The patent modifies the chemical and physical parameters of the anaerobic digestion system by adding a composition with specific properties (superabsorbent polymer and iron). This changes the degradation rate, residence time, and methane production efficiency parameters, transforming the slow degradation process into a faster, more efficient process while maintaining the ability to valorize abundant biomass.
2Reliability
If residence time of lignocellulosic residues in anaerobic digester is increased to improve degradation, then more complete methane production is achieved, but process time and operational cost increase
Solution Approach 1:
The composition of superabsorbent polymer and iron performs preliminary action by accelerating the initial degradation of lignocellulosic residues. This pre-treatment effect reduces the overall residence time needed in the anaerobic digester while still achieving complete degradation and methane production, thereby reducing operational time and cost.
Solution Approach 2:
The patent replaces the purely biological degradation mechanism with a enhanced bio-chemical process involving the composition. The superabsorbent polymer and iron create a synergistic effect that substitutes for extended biological decomposition time, achieving faster and more reliable methane production without requiring prolonged residence times.
3Ease of manufacture
If conventional anaerobic digestion is used for lignocellulosic residues, then simple process is maintained, but slow degradation rate reduces energy recovery efficiency
Solution Approach 1:
The composition acts as an intermediary that enhances energy recovery efficiency without significantly complicating the anaerobic digestion process. The superabsorbent polymer and iron mixture is easily incorporated into the existing system, maintaining process simplicity while dramatically improving the degradation rate and energy recovery from lignocellulosic residues.
Solution Approach 2:
The patent changes the energy recovery parameter by modifying the degradation kinetics through the addition of the composition. This allows the system to maintain its simple anaerobic digestion operation while achieving much higher energy recovery efficiency through accelerated methane production from lignocellulosic materials.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The use of this composition significantly reduces the residence time of lignocellulosic residues and boosts methane production, improving the efficiency and cost-effectiveness of anaerobic digestion processes.
Implementation Method 1
a superabsorbent polymer, of natural or synthetic origin which has a water retention capacity greater than or equal to 10 times its weight in demineralized water
Implementation Method 2
The invention relates to a new composition based on iron and a superabsorbent polymer intended to increase methane production yields by anaerobic fermentation
Implementation Method 3
This biological process is called methanization. It consists of transforming, in the absence of oxygen, organic matter into: a renewable energy, called biogas, which includes, among other things, methane (CH4)
Data Source
AI summary
The present invention is intended for the technical field of organic waste fermentation and makes it possible to increase methane production yields by anaerobic fermentation from lignocellulose materials of plant origin. The invention concerns a new composition based on a superabsorbent polymer and iron for accelerating the degradation of this type of organic waste, as well as a process for using it.